from tkinter import *
coords = [0, 0, 10, 0, 10, 10, 20, 10, 20, 20, 10, 20, 10, 30, 0, 30]

print('Введие координату x')
x = int(input())
print('Введие координату y')
y = int(input())
print('Введие коэфицент N')
N = int(input())

if N == 0 and x >= 0 and x <= 500 and y >= 0 and y <= 500:
    pass
elif N > 0 and 0 * N + x >= 0 and 0 * N + y >= 0 and 20 * N + x <= 500 and 20 * N + y <= 500:
    pass
elif N < 0 and 20 * N + x >= 0 and 20 * N + y >= 0 and 0 * N + x <= 500 and 0 * N + y <= 500:
    pass
    
else:
    print(' Размер фигуры превышает размер поля')
    exit()

root = Tk()
root.title("ИТ марафон")
root.geometry('500x500')
canvas = Canvas(bg='white', width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords[0] * N + x,coords[1] * N + y,coords[2] * N + x,
                      coords[3] * N + y,coords[4] * N + x,coords[5] * N + y,
                      coords[6] * N + x,coords[7] * N + y,coords[8] * N + x,
                      coords[9] * N + y,coords[10] * N + x,coords[11] * N + y,
                      coords[12] * N + x,coords[13] * N + y,coords[14] * N + x,
                      coords[15] * N + y)

root.mainloop()